JP2017199665A - Battery manufacturing method and battery manufacturing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out the press of a battery member without excess and deficiency in a prior art.SOLUTION: Disclosed is a battery manufacturing method using a battery manufacturing device. The battery manufacturing device includes: a press part; a measurement part; and a control part. The battery manufacturing method includes; a step (a) in which the press part presses the battery member; a step (b) in which the measurement part measures characteristics of the battery member pressed by the press part after the step (a); and a step (c) in which the control part controls a pressed state of the battery member by the press part in accordance with a measurement result by the measurement part after the step (b).SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a battery manufacturing method and a battery manufacturing apparatus.

  Patent document 1 is disclosing the press method which provides a vibration simultaneously with pressurization.

JP 2012-089388 A

  In the prior art, it is desired to press the battery member without excess or deficiency.

  A battery manufacturing method according to an embodiment of the present disclosure is a battery manufacturing method using a battery manufacturing apparatus, and the battery manufacturing apparatus includes a press unit, a measurement unit, and a control unit, and the press unit includes: A step (a) of pressing the battery member, a step (b) of measuring the characteristics of the battery member pressed by the pressing unit by the measuring unit after the step (a), and the step (b). Thereafter, the control unit includes a step (c) of controlling the pressing state of the battery member by the pressing unit according to the measurement result by the measuring unit.

  According to one embodiment of the present disclosure, a battery manufacturing apparatus includes a press unit that presses a battery member, a measurement unit that measures characteristics of the battery member pressed by the press unit, and a measurement result obtained by the measurement unit. A control unit that controls a state of pressing the battery member by the pressing unit.

  According to the present disclosure, the battery member can be pressed without excess or deficiency.

FIG. 1 is a diagram showing a schematic configuration of a battery manufacturing apparatus 1000 according to the first embodiment. FIG. 2 is a flowchart showing the battery manufacturing method according to the first embodiment. FIG. 3 is a diagram showing a schematic configuration of battery manufacturing apparatus 1100 in the first embodiment. FIG. 4 is a diagram showing a schematic configuration of battery manufacturing apparatus 1200 in the first embodiment. FIG. 5 is a diagram showing a schematic configuration of battery manufacturing apparatus 1300 in the first embodiment. FIG. 6 is a diagram showing a schematic configuration of battery manufacturing apparatus 1400 in the first embodiment. FIG. 7 is a cross-sectional view showing a schematic configuration of the constituent members of the battery member 10 in the manufacturing process. FIG. 8 is a cross-sectional view showing a schematic configuration of the constituent members of the battery member 10 in the manufacturing process. FIG. 9 is a cross-sectional view illustrating a schematic configuration of the constituent members of the battery member 10 in the manufacturing process. FIG. 10 is a cross-sectional view showing a schematic configuration of the battery member 10. FIG. 11 is a cross-sectional view illustrating a schematic configuration of the constituent members of the battery member 10 in the manufacturing process. FIG. 12 is a cross-sectional view showing a schematic configuration of the battery member 10. FIG. 13 is a cross-sectional view showing a schematic configuration of a manufactured battery. FIG. 14 is a cross-sectional view illustrating a schematic configuration of the battery member 10. FIG. 15 is a cross-sectional view illustrating a schematic configuration of the battery member 10. FIG. 16 is a diagram illustrating a schematic configuration of the battery manufacturing apparatus 2000 according to the second embodiment. FIG. 17 is a flowchart showing a battery manufacturing method according to the second embodiment. FIG. 18 is a diagram showing measured voltage values when the battery manufacturing method according to Embodiment 2 is executed. FIG. 19 is a diagram showing measured voltage values when the battery manufacturing method according to Embodiment 2 is executed. FIG. 20 is a diagram showing a schematic configuration of battery manufacturing apparatus 3000 in the third embodiment. FIG. 21 is a flowchart showing the battery manufacturing method according to the third embodiment. FIG. 22 is a diagram showing measured current values when the battery manufacturing method according to Embodiment 3 is executed.

  Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a diagram showing a schematic configuration of a battery manufacturing apparatus 1000 according to the first embodiment.

  Battery manufacturing apparatus 1000 according to Embodiment 1 includes press unit 100, measurement unit 200, and control unit 300.

  The press unit 100 presses the battery member 10.

  The measurement unit 200 measures the characteristics of the battery member 10 pressed by the press unit 100.

  The control unit 300 controls the press state of the battery member 10 by the press unit 100 according to the measurement result by the measurement unit 200. For example, the control unit 300 changes the pressed state of the battery member 10 by the press unit 100 according to the measurement result by the measurement unit 200.

  FIG. 2 is a flowchart showing the battery manufacturing method according to the first embodiment.

  The battery manufacturing method in the first embodiment is a battery manufacturing method using the battery manufacturing apparatus 1000 in the first embodiment. For example, the battery manufacturing method in the first embodiment is a battery manufacturing method executed in the battery manufacturing apparatus 1000 in the first embodiment.

  The battery manufacturing method in the first embodiment includes a pressing step S1001 (= step (a)), a measuring step S1002 (= step (b)), and a control step S1003 (= step (c)).

  The pressing step S1001 is a step of pressing the battery member 10 by the pressing unit 100.

  Measurement process S1002 is a process performed after press process S1001. The measuring step S1002 is a step of measuring the characteristics of the battery member 10 pressed by the pressing unit 100 by the measuring unit 200.

  Control process S1003 is a process performed after measurement process S1002. In the control step S1003, the control unit 300 controls the press state of the battery member 10 by the press unit 100 according to the measurement result by the measurement unit 200. For example, the control step S1003 is a step in which the control unit 300 changes the pressed state of the battery member 10 by the press unit 100 according to the measurement result by the measurement unit 200.

  According to the above manufacturing apparatus or manufacturing method, the battery member 10 can be pressed without excess or deficiency. That is, for example, the battery member 10 can be prevented from being damaged due to excessive pressing. Moreover, for example, it can be avoided that the density of the material inside the battery member 10 or the adhesion between the solid electrolyte and the electrode material becomes insufficient due to insufficient press.

  The press unit 100 may include, for example, a press body and a moving unit.

  The press body is a member that contacts the battery member 10 during pressing and presses the battery member 10. The press body may be, for example, a press stand.

  The moving unit is connected to the press body. The moving unit moves the press body. The moving unit may be a cylinder, for example.

  The pressing state of the battery member 10 by the press body may be controlled by controlling the moving unit by the control unit 300.

  The control unit 300 may be configured by, for example, a processor and a memory. The processor may be, for example, a CPU (Central Processing Unit) or an MPU (Micro-Processing Unit). At this time, the processor may execute the control method (battery manufacturing method) shown in the present disclosure by reading and executing a program stored in the memory.

  Moreover, in the battery manufacturing apparatus 1000 in Embodiment 1, the control part 300 may control the press pressure to the battery member 10 by the press part 100 according to a measurement result.

  In other words, in the battery manufacturing method according to the first embodiment, in the control step S1003, the control unit 300 controls the press pressure applied to the battery member 10 by the press unit 100 according to the measurement result (= Step (c1)) may be included.

  According to the above manufacturing apparatus or manufacturing method, the battery member 10 can be pressed with an appropriate pressing pressure. Thereby, the battery member 10 can be pressed without excessive or insufficient press pressure.

  The above-mentioned “control of press pressure” may mean, for example, changing (increasing or decreasing) the press pressure.

  Moreover, in the battery manufacturing apparatus 1000 in Embodiment 1, the control part 300 may control the press time to the battery member 10 by the press part 100 according to a measurement result.

  In other words, in the battery manufacturing method according to the first embodiment, in the control step S1003, the control unit 300 controls the press time for the battery member 10 by the press unit 100 according to the measurement result (= Step (c2)) may be included.

  According to the above manufacturing apparatus or manufacturing method, the battery member 10 can be pressed for an appropriate pressing time. Thereby, the battery member 10 can be pressed without excessive or insufficient press time.

  The above-mentioned “control of the press time” may mean, for example, changing the press time (lengthening or shortening).

  In the battery manufacturing apparatus 1000 or the battery manufacturing method in the first embodiment, the control unit 300 (control step S1003), for example, when the characteristics of the battery member 10 measured by the measurement unit 200 reaches a preset set value. Or when a predetermined measurement signal is detected by the measurement unit 200, or when a predetermined measurement signal is no longer detected by the measurement unit 200, the press operation is terminated in a predetermined procedure. Also good.

  At this time, the end of the pressing operation is, for example, a method of immediately stopping the pressing, a method of gradually reducing the pressing pressure, a method of stopping the pressing after a predetermined time, or a measurement signal of the measuring unit 200 May be a method of reducing the pressing pressure with reference to the above, a method of combining a plurality of methods, or the like.

[Configuration example of manufacturing equipment]
Hereinafter, a specific configuration example of the manufacturing apparatus will be described.

  FIG. 3 is a diagram showing a schematic configuration of battery manufacturing apparatus 1100 in the first embodiment.

  In addition to the configuration of battery manufacturing apparatus 1000 described above, battery manufacturing apparatus 1100 according to Embodiment 1 further includes the following configuration.

  That is, the battery manufacturing apparatus 1100 according to Embodiment 1 includes a press table 111, a press table 112, a cylinder 121, and a cylinder 122 as the press unit 100.

  A press table 111 and a press table 112, which are a pair of upper and lower press tables, sandwich the battery member 10 from above and below.

  As the press table 111 and the press table 112, a metal flat plate, an insulating-coated metal flat plate, a ceramic flat plate, a rubber flat plate, or the like can be used. Or as the press stand 111 and the press stand 112, the convex board or concave board which has a curvature, a roller-shaped member, the bag-shaped member which filled the inside with gas or a liquid, etc. can be used.

  A cylinder 121 is connected to the press stand 111. The cylinder 121 moves the press stand 111. That is, the press stand 111 is moved up and down by the cylinder 121.

  A cylinder 122 is connected to the press stand 112. The cylinder 122 moves the press stand 112. That is, the press stand 112 is moved up and down by the cylinder 122.

  For driving the cylinder 121 and the cylinder 122, for example, an air pressure, a water pressure, a hydraulic pressure, a direct acting motor, a screw type, and other methods can be appropriately used.

  At the time of pressing, only the cylinder 121 may be driven and the pressing may be executed only by the press stand 111. At this time, the battery manufacturing apparatus 1100 according to Embodiment 1 may be configured not to include the cylinder 122. That is, the press stand 112 may be a member whose position is fixed.

  The battery manufacturing apparatus 1100 according to the first embodiment includes a measuring unit 210, a probe unit 211, and a terminal unit 212 as the measuring unit 200.

  The terminal part 212 may be installed on a press stand. Alternatively, when the battery member 10 includes a current collector, the current collector may be used as the terminal portion 212. The terminal unit 212 may be, for example, an electrode, a piezoelectric element, a temperature measuring element, or the like. Alternatively, the press table 111 and the press table 112 may be used as the terminal unit 212.

  The probe unit 211 is connected to the terminal unit 212. The probe unit 211 guides the signal from the terminal unit 212 to the measuring device unit 210. The probe unit 211 may be, for example, an electric wire or an optical fiber. The probe unit 211 may be one system, two systems, or three systems or more.

  The measuring instrument unit 210 is connected to the probe unit 211. The measuring instrument unit 210 measures a signal from the probe unit 211. The measuring device unit 210 may be, for example, a resistance measuring device, a charging / discharging device, a voltmeter, an ammeter, a thermometer, a camera, an acoustic meter, and the like. Note that the measuring instrument section 210 and the control section 300 may have an integrated structure.

  In battery manufacturing apparatus 1000 according to Embodiment 1, the characteristic measured by measurement unit 200 may be an electrical characteristic.

  In other words, in the battery manufacturing method according to Embodiment 1, the characteristic measured by measurement unit 200 in measurement step S1002 may be an electrical characteristic.

  According to the above manufacturing apparatus or manufacturing method, when the battery member 10 is pressed, for example, the degree of contact between the solid electrolyte and the electrode material can be measured with higher accuracy. Thereby, control of the press state by a control part can be performed more accurately. Therefore, the battery member 10 can be pressed without excess or deficiency.

  The electrical characteristics may be, for example, a voltage value, a current value, an electrical resistance value, and the like. As a configuration for measuring these, the configuration of the battery manufacturing apparatus 1100 described above can be used. At this time, the battery manufacturing apparatus 1100 described above may further include a device that applies a current or a voltage to the battery member 10 in order to measure the electrical characteristics.

  Further, as the electrical characteristics, both a voltage value and a current value may be measured. At this time, for example, the impedance between the measurement terminals can be obtained based on the voltage signal and the current signal. In the case where the battery member 10 has a structure in which a plurality of batteries are connected in series, by analyzing the impedance step response and frequency characteristics, information on the number of the battery joined state is obtained. You can also.

  In battery manufacturing apparatus 1000 according to Embodiment 1, the characteristic measured by measurement unit 200 may be a thermal characteristic.

  In other words, in the battery manufacturing method according to Embodiment 1, the characteristic measured by measurement unit 200 in measurement step S1002 may be a thermal characteristic.

  According to the above configuration, when the battery member is pressed, for example, a change in the battery member 10 accompanied by a temperature change can be measured with higher accuracy. Thereby, control of the press state by a control part can be performed more accurately. Therefore, the battery member 10 can be pressed without excess or deficiency.

  FIG. 4 is a diagram showing a schematic configuration of battery manufacturing apparatus 1200 in the first embodiment.

  Battery manufacturing apparatus 1200 according to Embodiment 1 further includes the following configuration in addition to the configuration of battery manufacturing apparatus 1000 described above.

  That is, the battery manufacturing apparatus 1200 according to Embodiment 1 includes a thermometer 220 (for example, a non-contact thermometer) as the measurement unit 200.

  Battery manufacturing apparatus 1200 according to Embodiment 1 uses thermal information (for example, a temperature measurement result) as a method for controlling the pressurization. As shown in FIG. 4, the temperature of the battery member 10 is precisely measured by the thermometer 220 from the cross-sectional direction of the battery member 10. Thereby, a minute temperature change can be measured with the progress of pressurization. When the temperature change reaches a predetermined value, the pressurizing pressure is reduced by a predetermined procedure. Thereby, the battery member 10 is released from pressurization. As a result, the battery member 10 can be manufactured in a good pressurized state without excess or deficiency.

  In battery manufacturing apparatus 1000 according to Embodiment 1, the characteristic measured by measurement unit 200 may be an acoustic characteristic.

  In other words, in the battery manufacturing method according to Embodiment 1, in the measurement step S1002, the characteristic measured by the measurement unit 200 may be an acoustic characteristic.

  According to the above configuration, when the battery member 10 is pressed, for example, occurrence of minute cracks in the battery member 10 can be measured with higher accuracy. Thereby, control of the press state by a control part can be performed more accurately. Therefore, the battery member 10 can be pressed without excess or deficiency.

  FIG. 5 is a diagram showing a schematic configuration of battery manufacturing apparatus 1300 in the first embodiment.

  Battery manufacturing apparatus 1300 according to Embodiment 1 further includes the following configuration in addition to the configuration of battery manufacturing apparatus 1000 described above.

  That is, the battery manufacturing apparatus 1300 according to Embodiment 1 includes an acoustic meter 230 and a measurement terminal 231 as the measurement unit 200.

  Battery manufacturing apparatus 1300 according to Embodiment 1 uses acoustic information (for example, vibration) as a method for controlling pressure compression. As shown in FIG. 5, pressure measurement is performed by directing the measurement terminal 231 of the acoustic meter 230 to the battery member 10 that performs pressure compression. For example, when the acoustic meter 230 detects a specific waveform pattern generated before and after a minute crack starts to occur in the constituent members of the battery member 10 through the measurement terminal 231, the pressing and pressing are stopped immediately. Thereby, the battery member 10 can be produced in a state in which excessive pressurization is prevented.

  In battery manufacturing apparatus 1000 according to Embodiment 1, the characteristic measured by measurement unit 200 may be an appearance characteristic.

  In other words, in the battery manufacturing method according to Embodiment 1, in the measurement step S1002, the characteristic measured by the measurement unit 200 may be an appearance characteristic.

  According to the above configuration, when the battery member 10 is pressed, for example, occurrence of a change in appearance characteristics of the battery member 10 can be measured with higher accuracy. Thereby, control of the press state by a control part can be performed more accurately. Therefore, the battery member 10 can be pressed without excess or deficiency.

  FIG. 6 is a diagram showing a schematic configuration of battery manufacturing apparatus 1400 in the first embodiment.

  In addition to the configuration of battery manufacturing apparatus 1000 described above, battery manufacturing apparatus 1400 according to Embodiment 1 further includes the following configuration.

  That is, the battery manufacturing apparatus 1400 according to Embodiment 1 includes a video acquisition unit 240 (for example, a camera, a microscope, etc.) as the measurement unit 200.

  Battery manufacturing apparatus 1400 according to Embodiment 1 uses appearance information (for example, an image or the like) as a method for controlling the pressing and pressing. As shown in FIG. 6, the image acquisition unit 240 observes the battery member 10 from the cross-sectional direction of the battery member 10. Thereafter, the characteristic of the characteristic image associated with the progress of the pressure compression stored in the control unit 300 is compared with the characteristic of the image acquired by the video acquisition unit 240. Thereby, the battery member 10 can be produced in a good pressure state without excess or deficiency.

[Configuration example of battery member]
Hereinafter, a specific configuration example of the battery member 10 will be described.

  FIG. 7 is a cross-sectional view showing a schematic configuration of the constituent members of the battery member 10 in the manufacturing process.

  As shown in FIG. 7, the positive electrode active material layer 12 is formed on the positive electrode current collector 13. As the positive electrode current collector 13, a metal foil (for example, SUS foil, Al foil) can be used. The thickness of the positive electrode current collector 13 is, for example, 5 to 50 μm.

As the positive electrode active material contained in the positive electrode active material layer 12, a known positive electrode active material (for example, lithium cobaltate, LiNO, etc.) can be used. The material of the positive electrode active material is not limited to this, and various materials capable of detaching and inserting Li can be used. In addition, a known solid electrolyte (for example, an inorganic solid electrolyte) can be used as a material included in the positive electrode active material layer 12. As the inorganic solid electrolyte, a sulfide solid electrolyte or an oxide solid electrolyte can be used. For example, a mixture of Li ₂ S: P ₂ S ₅ can be used as the sulfide solid electrolyte. The surface of the positive electrode active material may be coated with a solid electrolyte. Further, as the material contained in the positive electrode active material layer 12, a conductive material (for example, acetylene black), a binder for binding (for example, polyvinylidene fluoride), and the like can be used.

  A paste-like paint in which the material contained in the positive electrode active material layer 12 is appropriately kneaded together with a solvent is applied and dried on the positive electrode current collector 13 to produce a positive electrode plate. In order to increase the density of the positive electrode active material layer 12, the positive electrode plate may be pressed. Thus, the thickness of the positive electrode active material layer 12 produced is 5-300 micrometers, for example.

  FIG. 8 is a cross-sectional view showing a schematic configuration of the constituent members of the battery member 10 in the manufacturing process.

  As shown in FIG. 8, the negative electrode active material layer 14 is formed on the negative electrode current collector 15. As the negative electrode current collector 15, a metal foil (for example, SUS foil, Cu foil) can be used. The thickness of the negative electrode current collector 15 is, for example, 5 to 50 μm.

As the negative electrode active material contained in the negative electrode active material layer 14, a known negative electrode active material (for example, graphite) can be used. The material of the negative electrode active material is not limited to this, and various materials capable of detaching and inserting Li can be used. In addition, a known solid electrolyte (for example, an inorganic solid electrolyte) can be used as a material for the negative electrode active material layer 14. As the inorganic solid electrolyte, a sulfide solid electrolyte or an oxide solid electrolyte can be used. For example, a mixture of Li ₂ S: P ₂ S ₅ can be used as the sulfide solid electrolyte. In addition, as the material included in the negative electrode active material layer 14, a conductive material (for example, acetylene black), a binder for binding (for example, polyvinylidene fluoride, etc.), and the like can be used.

  A paste-like paint in which the material contained in the negative electrode active material layer 14 is appropriately kneaded together with a solvent is applied and dried on the negative electrode current collector 15 to produce a negative electrode plate. In order to increase the density of the negative electrode active material layer 14, the negative electrode plate may be pressed. Thus, the thickness of the negative electrode active material layer 14 produced is 5-300 micrometers, for example.

  The negative electrode may have a larger area than the positive electrode. Thereby, the malfunction by lithium precipitation can be prevented.

  FIG. 9 is a cross-sectional view illustrating a schematic configuration of the constituent members of the battery member 10 in the manufacturing process.

  As shown in FIG. 9, the solid electrolyte layer 11 is formed on the positive electrode active material layer 12.

In addition, as a solid electrolyte used for the solid electrolyte layer 11, a known solid electrolyte (for example, an inorganic solid electrolyte) can be used. As the inorganic solid electrolyte, a sulfide solid electrolyte or an oxide solid electrolyte can be used. For example, a mixture of Li ₂ S: P ₂ S ₅ can be used as the sulfide solid electrolyte.

  In addition, as a material included in the solid electrolyte layer 11, a binder for binding (for example, polyvinylidene fluoride, etc.) can be used. The solid electrolyte layer 11 is produced by coating and drying a paste-like paint obtained by appropriately kneading the material contained in the solid electrolyte layer 11 together with a solvent on the positive electrode active material layer 12 (or the negative electrode active material layer 14). To do. In order to increase the strength of the solid electrolyte layer 11, a light press may be performed. Thus, the thickness of the solid electrolyte layer 11 produced is 1-100 micrometers, for example.

  FIG. 10 is a cross-sectional view showing a schematic configuration of the battery member 10.

  As shown in FIG. 10, the positive electrode plate shown in FIG. 9 in which the solid electrolyte layer 11 is formed on the positive electrode active material layer 12 and the negative electrode plate shown in FIG. 8 are connected to the positive electrode via the solid electrolyte layer 11. The battery member 10 is formed by overlapping the active material layer 12 and the negative electrode active material layer 14 so as to face each other.

  Alternatively, the battery member 10 may have the following configuration.

  FIG. 11 is a cross-sectional view illustrating a schematic configuration of the constituent members of the battery member 10 in the manufacturing process.

  As shown in FIG. 11, the solid electrolyte layer 11 is formed on the negative electrode active material layer 14.

  FIG. 12 is a cross-sectional view showing a schematic configuration of the battery member 10.

  As shown in FIG. 12, the positive electrode plate shown in FIG. 7 in which the solid electrolyte layer 11 is formed on the negative electrode active material layer 14 and the negative electrode plate shown in FIG. 11 are connected to the positive electrode via the solid electrolyte layer 11. The battery member 10 is formed by overlapping the active material layer 12 and the negative electrode active material layer 14 so as to face each other.

  FIG. 13 is a cross-sectional view showing a schematic configuration of a manufactured battery.

  The battery member 10 shown in FIG. 10 or FIG. 12 is pressed and pressed by the press unit 100 in the first embodiment (pressing process). Thereby, the electric power generation element (unit cell) shown in FIG. 13 is manufactured.

  10 or 12, the probe unit 211 in the battery manufacturing apparatus 1100 shown in FIG. 3 is connected to the positive electrode current collector 13 and the negative electrode current collector 15, for example. Also good.

  Alternatively, the battery member 10 may have the following configuration.

  FIG. 14 is a cross-sectional view illustrating a schematic configuration of the battery member 10.

  FIG. 14A shows a configuration when the solid electrolyte layer 11 is applied on the positive electrode active material layer 12.

  FIG. 14B shows a configuration when the solid electrolyte layer 11 is applied on the negative electrode active material layer 14.

  As shown in FIG. 14, the battery member 10 may be a battery having a bipolar structure. That is, as shown in FIG. 14, the battery member 10 uses the negative electrode current collector 15 as the upper end current collector. Further, the positive electrode current collector 13 is used as the current collector at the lower end. A bipolar current collector 16 is used as a current collector other than these. Positive and negative active material layers are formed on both surfaces of the bipolar current collector 16. The battery member 10 may have a structure in which a plurality of batteries formed in this way are connected in series. The bipolar current collector 16 may be a single member. Alternatively, the bipolar current collector 16 may be a current collector formed by adhering, joining, or superposing two or more current collectors.

  14, the probe unit 211 in the battery manufacturing apparatus 1100 illustrated in FIG. 3 may be connected to the negative electrode current collector 15 and the positive electrode current collector 13, for example.

  Alternatively, the battery member 10 may have the following configuration.

  FIG. 15 is a cross-sectional view illustrating a schematic configuration of the battery member 10.

  FIG. 15A shows a configuration when the positive electrode plate shown in FIG. 9 is used.

  FIG. 15B shows a configuration when the negative electrode plate shown in FIG. 11 is used.

  As shown in FIG. 15, the battery member 10 may be a laminate in which an active material layer and a solid electrolyte layer 11 are laminated on one side of a current collector. As shown in FIG. 15, a measurement counter electrode 17 (for example, an auxiliary metal plate, a metal foil, or the like) is applied to the solid electrolyte layer 11 on the side where the active material layer is not formed. Electrical measurement can be performed by applying pressure in this state. Note that, for example, a problem caused by charging for measurement in a state where there is no active material layer on the counter electrode side can be ignored by setting the charging current to a minute current.

  15, the probe unit 211 in the battery manufacturing apparatus 1100 shown in FIG. 3 described above may be connected to the current collector and the counter electrode 17 for measurement, for example.

  As described above, in Embodiment 1, the battery member 10 may include a solid electrolyte.

  In Embodiment 1, the battery member 10 includes a solid electrolyte layer including a solid electrolyte, a positive electrode material layer including a positive electrode material (for example, a positive electrode active material layer), and a negative electrode material layer including a negative electrode material (for example, a negative electrode). A layered product in which at least one of the active material layers is laminated may be included.

  According to the above configuration, the laminate of the solid electrolyte and the electrode material can be pressed without excess or deficiency. That is, for example, it can be avoided that the laminate is damaged by excessive pressing. Moreover, for example, it can be avoided that the density of the solid electrolyte and the electrode material inside the battery member 10 or the adhesion between the solid electrolyte and the electrode material becomes insufficient due to insufficient press.

  In an all-solid-state battery that is a battery including a solid electrolyte, a solid electrolyte is used instead of an electrolytic solution, and therefore, the bonding state of the positive electrode, the negative electrode, and the solid electrolyte becomes more important. An all-solid-state battery can be formed by a thin film lamination process, but is more productive when using a coating process. In the coating process, pressing is performed to increase the density of each coated layer. In the coating process, pressing is performed in order to adhere the positive electrode material layer, the negative electrode material layer, and the solid electrolyte layer. In the press of these coating processes, if it is the structure of this indication, a press without excess and deficiency can be performed.

  The battery manufacturing method of Embodiment 1 may further include the following steps.

  That is, the battery manufacturing method of Embodiment 1 includes a positive electrode plate manufacturing step of forming a positive electrode material layer on the positive electrode current collector, a negative electrode plate manufacturing step of forming a negative electrode material layer on the negative electrode current collector, and a positive electrode material. A solid electrolyte layer forming step of forming a solid electrolyte layer on one of the layer and the negative electrode material layer, and a laminate manufacturing method of manufacturing a laminate by facing the positive electrode material layer and the negative electrode material layer through the solid electrolyte layer You may include the process and the laminated body pressurization process which pressurizes and compresses from both sides of a collector, and joins a laminated body.

  Alternatively, the laminate manufacturing step includes a step of forming a positive electrode material layer and a negative electrode material layer on both sides of the solid electrolyte layer, a step of further forming a positive electrode current collector outside the positive electrode material layer, and an outer side of the negative electrode material layer. And a step of further forming a negative electrode current collector.

(Embodiment 2)
Hereinafter, the second embodiment will be described. The description overlapping with the above-described first embodiment is omitted as appropriate.

  FIG. 16 is a diagram illustrating a schematic configuration of the battery manufacturing apparatus 2000 according to the second embodiment.

  In addition to the configuration of battery manufacturing apparatus 1000 in the first embodiment described above, battery manufacturing apparatus 2000 in the second embodiment further includes the following configuration.

  That is, battery manufacturing apparatus 2000 according to Embodiment 2 further includes current application unit 400.

The current application unit 400 applies a current to the battery member 10. The current application unit 400 applies a predetermined current to the battery member 10 from the time point _tv1 .

The control unit 300 increases the press pressure applied to the battery member 10 by the press unit 100 over time in a period after the time point _tv1 .

  Here, in the second embodiment, the characteristic measured by the measurement unit 200 is a voltage.

The controller 300 stops increasing the press pressure with time at the time point _tv2 . The time point _tv2 is a time point when the measurement voltage value that is the measurement result becomes equal to or less than the predetermined voltage value.

  FIG. 17 is a flowchart showing a battery manufacturing method according to the second embodiment.

  The battery manufacturing method in Embodiment 2 further includes the following steps in addition to the steps of the battery manufacturing method in Embodiment 1 described above.

  That is, the battery manufacturing method in the second embodiment is a battery manufacturing method using the battery manufacturing apparatus 2000 in the second embodiment. For example, the battery manufacturing method in the second embodiment is a battery manufacturing method executed in the battery manufacturing apparatus 2000 in the second embodiment.

  The battery manufacturing method in the second embodiment further includes a current application step S2002 (= step (d)).

Current application step S2002 is the current applying unit 400, from the time _{t v1,} a step of applying a predetermined current to the battery member 10.

  In the battery manufacturing method according to the second embodiment, the control process includes a press pressure increase process S2004 (= process (C11)) and a press pressure increase stop process S2006 (= process (C12)).

In the press pressure increasing step S2004, the control unit 300 executes a time-dependent increase in the press pressure applied to the battery member 10 by the press unit 100 during a period after the time point _tv1 .

  Here, in the second embodiment, the characteristic measured by the measurement unit 200 in the measurement steps S2003 and S2009 is a voltage.

The press pressure increase stop step S2006 is a step in which the control unit 300 stops increasing the press pressure with time at the time point _tv2 . The time point _tv2 is a time point when the measurement voltage value that is the measurement result becomes equal to or less than the predetermined voltage value.

  According to the above manufacturing apparatus or manufacturing method, it is possible to avoid excessive pressing of the battery member 10 with higher accuracy.

  The current application unit 400 may include, for example, a current source and a lead wire. That is, the current application unit 400 may apply a current to the battery member 10 through a lead wire. At this time, the lead wire may be connected to, for example, a portion to which the probe unit 211 can be connected (for example, a current collector or a counter electrode for measurement).

  Further, the current application step S2002 may be executed after the pressing step S2001. Or current application process S2002 may be performed before press process S2001.

  In the battery manufacturing method according to the second embodiment, the control step may include a determination step S2005 between the press pressure increase step S2004 and the press pressure increase stop step S2006.

  Determination step S2005 is a step of determining whether or not the measured voltage value is equal to or less than a predetermined voltage value.

  When the determination result of the determination step S2005 is “Yes”, the press pressure increase stop step S2006 is executed.

  When the determination result in the determination step S2005 is “No”, for example, the measurement step S2003 may be executed again.

Further, in the battery manufacturing apparatus 2000 according to the second embodiment, the control unit 300 from the time _{t v2,} until time _{t v3} is a time point later than the time _{t v2,} may be maintained pressing pressure to a certain pressure .

  In other words, in the battery manufacturing method according to Embodiment 2, the control step may further include a press pressure maintaining step S2007 (= step (C13)).

The press pressure maintaining step S2007 is a step of maintaining the press pressure at a constant pressure by the control unit 300 from the time point _tv2 to the time point _tv3 that is a time point later than the time point _tv2 .

  According to the above manufacturing apparatus or manufacturing method, it is possible to avoid the press of the battery member 10 being insufficient with higher accuracy.

Further, in the battery manufacturing apparatus 2000 according to the second embodiment, the control unit 300, at time _{t v3} is a time point later than the time _{t v2,} it may stop the press to the battery member 10 by the press section 100.

The current application unit 400 may apply a predetermined current to the battery member 10 from the time point _tv1 to the time point _tv4 that is a time point after the time point _tv3 .

The control unit 300 may resume pressing the battery member 10 by the pressing unit 100 when the measured voltage value becomes larger than the predetermined voltage value in the period from the time point _tv3 to the time point _tv4 .

  In other words, in the battery manufacturing method according to the second embodiment, the control step may further include a press stop step S2008 (= step (C14)) and a press restart step S2011 (= step (C15)). .

Press stop step S2008 by the control unit 300, at time _{t v3} is a time point later than the time _{t v2,} it is a step for stopping the press to the battery member 10 by the press section 100.

In the current application step S2002, the current application unit 400 may apply a predetermined current to the battery member 10 from the time point _tv1 to the time point _tv4 that is a time point later than the time point _tv3 .

In the press resuming step S2011, when the measured voltage value becomes larger than the predetermined voltage value by the control unit 300 during the period from the time point _tv3 to the time point _tv4 , the pressing to the battery member 10 by the pressing unit 100 is performed. It is a process to resume.

  According to the above manufacturing apparatus or manufacturing method, the stable state of the battery member 10 can be confirmed after releasing the pressure. Thereby, for example, when the stable state of the battery member 10 is not confirmed after pressure release, the battery member 10 can be pressed again. Therefore, it is possible to avoid the battery member 10 from being insufficiently pressed with higher accuracy.

  In the press restart process S2011, for example, each process shown in FIG. 17 may be executed again from the press process S2001.

  In the battery manufacturing method according to the second embodiment, the control process may include a measurement process S2009 and a determination process S2010 between the press stop process S2008 and the press restart process S2011.

  Determination step S2010 is a step of determining whether or not the measured voltage value is greater than a predetermined voltage value.

  When the determination result of the determination step S2010 is “Yes”, the press resumption step S2011 is executed.

  When the determination result of the determination step S2010 is “No”, for example, the control step may be terminated.

  FIG. 18 is a diagram showing measured voltage values when the battery manufacturing method according to Embodiment 2 is executed.

  A time point tp in FIG. 18 is a time point when the pressurization of the battery member 10 is started. At the start of pressurization (tp), the electrical contact between the positive electrode and the negative electrode is weak. For this reason, it does not function as a battery, and a predetermined voltage does not appear in the stage before charging. That is, the measurement voltage value is a very small voltage.

A time point _tv1 in FIG. 18 is a time point at which application of the predetermined current C1 (mA) to the battery member 10 is started. From the time point _tv1 , the design capacity D (mAh) of the battery member 10 is charged with, for example, a current C1 (mA) of 1/100 (ie, C1 = D / 100). At this time, the upper limit voltage between the terminals is limited to Vh (V).

As the pressure is increased, the positive electrode and the negative electrode come into electrical contact. For this reason, a voltage of several volts is shown before charging (before application of the predetermined current C1). After that, the battery has an electromotive force V0 (t _v1 ).

  However, at this stage, since the pressurization is insufficient, the internal resistance of the battery member 10 is high. For this reason, when the charging current is applied, the voltage greatly increases (V1). At this time, in some cases, the measured voltage value reaches the upper limit voltage (Vh) between the terminals. If the measured voltage value reaches the upper limit voltage between the terminals, the applied current value is reduced so that it is not more than the upper limit voltage between the terminals.

  When the pressurization time is extended or the pressurization pressure is increased, the interparticle connection inside the battery member 10 becomes better. For this reason, even if a charging current is applied, the voltage increase between the terminals is gradually reduced.

A time point _tv2 in FIG. 18 is a time point when the measured voltage value becomes the predetermined voltage value (V2). A time point _tv3 in FIG. 18 is a time point when the pressurization is stopped. The pressurization pressure is kept constant for a predetermined time from the time (t _v2 ) when the measured voltage value (terminal voltage) reaches the predetermined value (v2). Thereafter, the battery member 10 is released from the pressure (t _v3 ). Thereby, the battery member 10 can be produced in a good pressure state without excess or deficiency.

A time point _tv4 in FIG. 18 is a time point when the application of the predetermined current C1 to the battery member 10 is stopped. After the battery member 10 is released from pressurization, a current is applied until the time point _tv4 . Thereby, the stable state of the joint after pressure release can be confirmed. When the battery member 10 is released from pressurization (t _v3 to t _v4 ), pressurization can be performed again in the same manner when the measured voltage value increases.

  The current applied to the battery member 10 may be a direct current as shown in FIG. Alternatively, the current applied to the battery member 10 may be another waveform current.

  FIG. 19 is a diagram showing measured voltage values when the battery manufacturing method according to Embodiment 2 is executed.

  FIG. 19 shows an example in which a rectangular wave current having an amplitude of a predetermined current value C <b> 1 is used as the current applied to the battery member 10. When a rectangular current as shown in FIG. 19 is applied, the measured voltage value repeatedly fluctuates in response to the current application. For example, in the first rectangular current application, as shown in FIG. 19, the voltage rapidly rises from v10 to v1s and then gradually rises to v1e. Thereafter, when the current application is interrupted, the voltage drops to v20, and the next rectangular current application is reached. The timing at which the battery member 10 is released from pressurization may be, for example, the timing at which the voltage becomes a predetermined value or less in the process of interrupting current application. Alternatively, the battery member 10 may be released from the pressurization when vns−vn0 or vne−vns is equal to or less than a predetermined value.

(Embodiment 3)
The third embodiment will be described below. The description overlapping with the first embodiment or the second embodiment is omitted as appropriate.

  FIG. 20 is a diagram showing a schematic configuration of battery manufacturing apparatus 3000 in the third embodiment.

  In addition to the configuration of battery manufacturing apparatus 1000 in the first embodiment described above, battery manufacturing apparatus 3000 in the third embodiment further includes the following configuration.

  That is, battery manufacturing apparatus 3000 according to Embodiment 3 further includes voltage application unit 500.

The voltage application unit 500 applies a voltage to the battery member 10. The voltage application unit 500 applies a predetermined voltage to the battery member 10 from the time point t _i1 .

The control unit 300 increases the press pressure applied to the battery member 10 by the press unit 100 over time in a period after the time point t _i1 .

  Here, in the third embodiment, the characteristic measured by the measurement unit 200 is current.

The controller 300 stops increasing the press pressure with time at the time point t _i2 . The time point t _i2 is a time point when the measured current value as the measurement result is equal to or greater than the predetermined current value.

  FIG. 21 is a flowchart showing the battery manufacturing method according to the third embodiment.

  The battery manufacturing method in Embodiment 3 further includes the following steps in addition to the steps of the battery manufacturing method in Embodiment 1 described above.

  That is, the battery manufacturing method in the third embodiment is a battery manufacturing method using the battery manufacturing apparatus 3000 in the third embodiment. For example, the battery manufacturing method in the third embodiment is a battery manufacturing method executed in the battery manufacturing apparatus 3000 in the third embodiment.

  The battery manufacturing method in the third embodiment further includes a voltage application step S3002 (= step (e)).

The voltage application step S3002 is a step of applying a predetermined voltage to the battery member 10 from the time t _i1 by the voltage application unit 500.

  In the battery manufacturing method according to the third embodiment, the control step includes a press pressure increasing step S3004 (= step (C21)) and a press pressure increase stopping step S3006 (= step (C22)).

In the press pressure increasing step S3004, the control unit 300 executes a time-dependent increase in the press pressure applied to the battery member 10 by the press unit 100 during a period after the time point t _i1 .

  Here, in the third embodiment, the characteristic measured by the measurement unit 200 in the measurement steps S3003 and S3009 is a current.

Pressing pressure increased stopping step S3006 by the control unit 300, at time _{t i2,} a step of stopping the increase over time of the pressing pressure. The time point t _i2 is a time point when the measured current value as the measurement result is equal to or greater than the predetermined current value.

  According to the above manufacturing apparatus or manufacturing method, it is possible to avoid excessive pressing of the battery member 10 with higher accuracy.

  Note that the voltage application unit 500 may include, for example, a voltage source and a lead wire. That is, the voltage application unit 500 may apply a voltage to the battery member 10 through a lead wire. At this time, the lead wire may be connected to, for example, a portion to which the probe unit 211 can be connected (for example, a current collector or a counter electrode for measurement).

  Further, the voltage application step S3002 may be executed after the pressing step S3001. Or voltage application process S3002 may be performed before press process S3001.

  In the battery manufacturing method according to Embodiment 3, the control step may include a determination step S3005 between the press pressure increase step S3004 and the press pressure increase stop step S3006.

  Determination step S3005 is a step of determining whether or not the measured current value is greater than or equal to a predetermined current value.

  When the determination result of the determination step S3005 is “Yes”, the press pressure increase stop step S3006 is executed.

  When the determination result of the determination step S3005 is “No”, for example, the measurement step S3003 may be executed again.

In battery manufacturing apparatus 3000 according to Embodiment 3, control unit 300 may maintain the press pressure at a constant pressure from time point t _i2 to time point t _i3, which is a time point later than time point t _i2. .

  In other words, in the battery manufacturing method according to Embodiment 3, the control step may further include a press pressure maintaining step S3007 (= step (C23)).

The press pressure maintaining step S3007 is a step of maintaining the press pressure at a constant pressure by the control unit 300 from the time point t _i2 to a time point t _i3 that is a time point after the time point t _i2 .

  According to the above manufacturing apparatus or manufacturing method, it is possible to avoid the battery member from being insufficiently pressed with higher accuracy.

In battery manufacturing apparatus 3000 in the third embodiment, control unit 300 may stop pressing of battery member 10 by pressing unit 100 at time t _i3 , which is a time after time t _i2 .

The voltage application unit 500 may apply a predetermined voltage to the battery member 10 from the time point t _i1 to a time point t _i4 that is later than the time point t _i3 .

The control unit 300 may resume pressing the battery member 10 by the pressing unit 100 when the measured current value becomes smaller than the predetermined current value during the period from the time point t _i3 to the time point t _i4 .

  In other words, in the battery manufacturing method according to Embodiment 3, the control step may further include a press stop step S3008 (= step (C24)) and a press resumption step S3011 (= step (C25)). .

The press stop process S3008 is a process in which the control unit 300 stops the press of the press unit 100 on the battery member 10 at a time point t _i3 , which is a time point after the time point t _i2 .

In the voltage application step S3002, the voltage application unit 500 may apply a predetermined voltage to the battery member 10 from the time point t _i1 to the time point t _i4 that is later than the time point t _i3 .

In the press resuming step S3011, when the measured current value becomes smaller than the predetermined current value by the control unit 300 during the period from the time point t _i3 to the time point t _i4 , the press unit 100 presses the battery member 10. It is a process to resume.

  According to the above manufacturing apparatus or manufacturing method, the stable state of the battery member 10 can be confirmed after releasing the pressure. Thereby, for example, when the stable state of the battery member 10 is not confirmed after pressure release, the battery member 10 can be pressed again. Therefore, it is possible to avoid the battery member 10 from being insufficiently pressed with higher accuracy.

  In the press resumption process S3011, for example, each process shown in FIG. 21 may be executed again from the press process S3001.

  In the battery manufacturing method according to the third embodiment, the control process may include a measurement process S3009 and a determination process S3010 between the press stop process S3008 and the press restart process S3011.

  Determination step S3010 is a step of determining whether or not the measured current value is smaller than a predetermined current value.

  When the determination result of the determination step S3010 is “Yes”, the press resumption step S3011 is executed.

  When the determination result of the determination step S3010 is “No”, for example, the control step may be terminated.

  FIG. 22 is a diagram showing measured current values when the battery manufacturing method according to Embodiment 3 is executed.

A time point t _i1 in FIG. 22 is a time point at which application of the predetermined voltage V1 (V) to the battery member 10 is started. For example, a predetermined voltage Vo (V) is applied between the positive electrode current collector and the negative electrode current collector of the battery member 10 from the time point t _i1 . At this time, the upper limit current between the terminals is limited to ih (mA).

  A time point tp in FIG. 22 is a time point when the pressurization of the battery member 10 is started. At the start of pressurization (tp), current hardly flows because the electrical contact between the positive electrode and the negative electrode is weak. Thereafter, as the pressurization pressure is increased, the positive electrode and the negative electrode come into electrical contact. For this reason, an electric current begins to flow through the battery member 10 gradually.

  However, since the pressurization is insufficient at this stage, the internal resistance of the battery member 10 is high. For this reason, the current value is still small. Furthermore, when the pressurization time is extended or the pressurization pressure is increased, the interparticle connection inside the battery member 10 becomes better. Thereby, the current of the battery member 10 gradually increases.

A time point t _i2 in FIG. 22 is a time point when the measured current value becomes the predetermined current value (i2). A time point t _i3 in FIG. 22 is a time point when the pressurization is stopped. When the measured current value reaches a predetermined value (i2) (t _i2 ), the pressurizing pressure is kept constant for a predetermined time. Thereafter, the pressurization of the battery member 10 is stopped and gradually weakened according to a predetermined program (t _i3 ). Thereby, the battery member 10 can be produced in a good pressure state without excess or deficiency.

A time point _ti4 in FIG. 22 is a time point when the application of the predetermined voltage V1 to the battery member 10 is stopped. After the battery member 10 is released from pressurization, a voltage is applied until time t _i4 . Thereby, the stable state of the joint after pressure release can be confirmed. When the battery member 10 is released from the pressurization (t _i3 to t _i4 ), when the measured current value decreases, the pressurization can be performed again in the same manner.

  The voltage applied to the battery member 10 may be a DC voltage as shown in FIG. Alternatively, the voltage applied to the battery member 10 may be another waveform voltage (for example, a rectangular wave voltage).

  The present disclosure can be applied to various applications (for example, various energy devices including batteries, various ceramic devices, carbon material devices, etc.) that are required to exhibit good performance and be prevented from being damaged by excessive press. ) Can be suitably used.

DESCRIPTION OF SYMBOLS 10 Battery member 100 Press part 200 Measuring part 300 Control part 400 Current application part 500 Voltage application part 1000 Battery manufacturing apparatus 1100 Battery manufacturing apparatus 1200 Battery manufacturing apparatus 1300 Battery manufacturing apparatus 1400 Battery manufacturing apparatus 2000 Battery manufacturing apparatus 3000 Battery manufacturing apparatus

Claims (14)

A battery manufacturing method using a battery manufacturing apparatus,
The battery manufacturing apparatus includes a press unit, a measurement unit, and a control unit,
A step (a) of pressing the battery member by the pressing unit;
After the step (a), the step (b) of measuring the characteristics of the battery member pressed by the pressing unit by the measuring unit;
After the step (b), the control unit controls the press state of the battery member by the press unit according to the measurement result by the measurement unit;
Including
Battery manufacturing method. The step (c) includes a step (c1) of controlling a pressing pressure applied to the battery member by the pressing unit according to the measurement result by the control unit.
The battery manufacturing method according to claim 1. The step (c) includes a step (c2) of controlling a pressing time to the battery member by the pressing unit according to the measurement result by the control unit.
The battery manufacturing method according to claim 1 or 2. In the step (b), the characteristic measured by the measurement unit is an electrical characteristic.
The battery manufacturing method according to claim 1. The battery manufacturing apparatus includes a current application unit that applies current to the battery member,
_Including a step (d) of applying a predetermined current to the battery member from the time point _tv1 by the current application unit;
The step (c) includes a step (c11) of executing a time-dependent increase in press pressure to the battery member by the press unit in a period after the time point _tv1 by the control unit,
In the step (b), the characteristic measured by the measurement unit is a voltage,
When a time point when the measurement voltage value as the measurement result is equal to or lower than a predetermined voltage value is a time point _tv2 ,
The step (c) includes a step (c12) of stopping the increase in the press pressure with time at the time point _tv2 by the control unit.
The battery manufacturing method according to claim 4. The step (c) by the control unit, from the time point t _v2, until said time t _v3 is a time point later than the time t _v2, comprising a step (c13) for maintaining the pressing pressure to a certain pressure ,
The battery manufacturing method according to claim 5. The step (c) includes a step (c14) of stopping the pressing of the battery member by the pressing unit at the time t _v3 which is a time after the time t _v2 by the control unit,
In the step (d) said current applying unit, said from the time t _v1, until time t _v4 is the time later than the time point t _v3, the predetermined current is applied to the cell components,
The step (c) by the control unit, in a period from the time point t _v3 until the time t _v4, when the measured voltage value is larger than the predetermined voltage value, the battery according to the press section Including a step (c15) of restarting pressing on the member,
The battery manufacturing method according to claim 5 or 6. The battery manufacturing apparatus includes a voltage application unit that applies a voltage to the battery member,
_Including a step (e) of applying a predetermined voltage to the battery member from the time point t _i1 by the voltage application unit;
The step (c) includes a step (c21) of executing a time-dependent increase in press pressure to the battery member by the press unit in a period after the time point t _i1 by the control unit,
In the step (b), the characteristic measured by the measurement unit is a current,
When the time point when the measured current value, which is the measurement result, is equal to or greater than the predetermined current value is defined as time point t _i2 ,
The step (c) includes a step (c22) of stopping the increase in the press pressure with time at the time point t _i2 by the control unit.
The battery manufacturing method according to claim 4. The step (c) by the control unit, from the time point t _i2, until said time t _i3 is a time point later than the time t _i2, comprising a step (c23) for maintaining the pressing pressure to a certain pressure ,
The battery manufacturing method according to claim 8. The step (c) includes a step (c24) of stopping the pressing of the battery member by the pressing unit at the time t _i3 which is a time after the time t _i2 by the control unit,
In the step (e), the voltage application unit applies a predetermined voltage to the battery member from the time point t _i1 to a time point t _i4 that is a time point after the time point t _i3 ,
In the step (c), when the measured current value becomes smaller than the predetermined current value during the period from the time point t _i3 to the time point t _i4 by the control unit, the battery by the press unit is used. Including a step (c25) of restarting pressing on the member,
The battery manufacturing method according to claim 8 or 9. In the step (b), the characteristic measured by the measurement unit is a thermal characteristic.
The battery manufacturing method according to claim 1. In the step (b), the characteristic measured by the measurement unit is an acoustic characteristic.
The battery manufacturing method according to claim 1. The battery member includes a laminate in which a solid electrolyte layer including a solid electrolyte, and at least one of a positive electrode material layer including a positive electrode material and a negative electrode material layer including a negative electrode material are stacked.
The battery manufacturing method according to claim 1. A press section for pressing the battery member;
A measuring unit for measuring characteristics of the battery member pressed by the pressing unit;
In accordance with a measurement result by the measurement unit, a control unit that controls a press state of the battery member by the press unit;
Comprising
Battery manufacturing equipment.

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